Home » Categories » Natural Stone Q & A’s

Water ring on black absolute tile.

We just purchased a Benissimo systems black absolute counter top. The installer did not seal the counter and a plastic water cup was left by the sink and it left a white ring that would not wipe up. I was using a soft cloth with distilled water and the manufacturer recommended using mild soapy water first and if that doesn't work to use a poultice? Another friend recommended recreating the stain on an extra tile that we have and trying a color enhancer on it to see if that works. What would you recommend?
 

Dear C.:

 

The installer did not seal the counter

 

That's a very good thing: nobody can seal black “granite”. It is too dense a stone to take any impregnator (a.k.a. sealer) in. Some “mysterious problems” could develop if one tries anyway.

 

a plastic water cup was left by the sink and it left a white ring that would not wipe up. I was using a soft cloth with distilled water and the manufacturer recommended using mild soapy water first and if that doesn't work to use a poultice

 

It sounds to me like the manufacturer does not know stone from a tub of whipped cream if they suggested you that.

Poulticing is a procedure that one uses to remove deeply imbedded stains, not that “thing” that you have. Let me explain you:

A stain – a real stain – is always darker than the stained material. If it is lighter, it's either a mark of corrosion created by an acid (etching), or a caustic mark created by a base (bleaching). There are no known exceptions to this rule. In the case of natural stone, bleaching can't occur, and therefore they are etch-marks all the time: plain and simple surface damages, like shallow chemical scratches.

So the real question is: what was inside that plastic coup that could have caused that damage?

And unless it was a solution based on HF (Hydrofluoric Acid), why did your black “granite” ever get damaged like that?

Let me tell you: something is really fishy here. What kind of black “granite” do you have? One thing is for sure it is not the real black absolute from South Africa. So what is that stone and where is it coming from?…

My suggestion is that you consult with a reputable stone restoration professional to make a sure assessment of your problem.

May I ask you now to please read and e-sign our Statement of Purpose at: http://www.marblecleaning.org/purpose.htm?

Ciao and good luck,

Maurizio Bertoli

 

www.marblecleaning.org – The Only Consumers' Portal to the Stone Industry Establishment!
Attachments Attachments
There are no attachments for this article.
Comments Comments
There are no comments for this article. Be the first to post a comment.
Related Articles RSS Feed
hard to clean travertine
Viewed 0 times since Sun, May 17, 2009
Thomson sealer on bluestone
Viewed 0 times since Tue, Apr 29, 2008
black granite tile countertop - seams
Viewed 0 times since Mon, Feb 11, 2008
clean & maintain Tropical Brown granite counter
Viewed 0 times since Sun, Jan 13, 2008
Rust Stains on Travertine
Viewed 0 times since Mon, Oct 22, 2007
Granite Edge Polishing
Viewed 0 times since Sat, Nov 10, 2007
Black Galaxy Haze
Viewed 0 times since Fri, Nov 2, 2007
Wet look enhancement
Viewed 0 times since Mon, Oct 15, 2007
Acid Burn/ Etching
Viewed 0 times since Sun, Aug 2, 2009
removing a granite countertop
Viewed 0 times since Sun, Jan 24, 2010